It is just doubled the number before so the next number would be 160, then it would be 360, 720, etc..
Answer:

Step-by-step explanation:
we know that


therefore

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➷ Multiply 4.6 by 4 to get the sum of the numbers after 5 was added:
4.6 x 4 = 18.4
^ This is the new total
Subtract 5 from this:
18.4 - 5 = 13.4
Divide this value by 3 to get the original mean:
13.4/3 = 67/15
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Yes. I believe so. If u solve the equations you get x=1/2 and y=-1